Caution Light Panel Questions Flashcards
Generator cut in speed
43-48%
Generator shift range
65-75%
How many phases do the generators have?
Three phase AC
List four possible causes of a generator light
Generator failure, gearbox failure to shift, partial generator failure, generator failure no crossover
Left Generator major items powered
- All lighting except flood and utility
- Left oil pressure indicator
- Left fuel boost pump
- Left fuel flow indicator
- Left hydraulic pressure indicator
- AOA system
- YSAS and rudder trim control
Right Generator major items powered
- MDP / UFCP / HUD
- Flap motors
- Trim
- Ignition Exciters
- Right fuel boost pump
- Right fuel flow indicator
- Right oil pressure
- Right hydraulic pressure indicator
- Fuel / oxygen quantity indicators
- WCA lights (dim)
- Floodlights (normal)
- Air conditioning and Anti-Ice
- Canopy seal
- Pitot heat / TAT probe heater
Normal hydraulic pressure
2850-3200 psi
When does the hydraulic light illuminate for low pressure?
At 1500 psi
When does the hydraulic light go out?
Above 1800 psi
What does it mean if a hydraulic light comes on with normal pressure?
Hydraulic overtemperature
What hydraulic issue doesn’t illuminate the hydraulic light?
An overpressure
What is the flight time limit if one hydraulic indicator shows 0 psi?
35 minutes
Don’t attempt _______ with dual hydraulic failure
Landing
Should hydraulic lights illuminate when rapidly cycling flight controls?
No
What items are powered by the utility hydraulics?
FANGS
Flight control backup
Stability augmenter
Nosewheel steering
Landing gear extension and retraction
Speedbrake
What items are powered by the flight hydraulics?
The primary flight controls
Normal fuel pressure
10 psi
When does the fuel pressure light illuminate?
Below 6 psi
Gravity feed should maintain MAX power from _______ to approximately _______. By specification, gravity flow is guaranteed only to _______. Flameouts have occurred as low as ________.
Sea level; 25,000 ft MSL
6,000 ft MSL
7,000 ft MSL
MAX thrust dive at 0 or negative G limitations
~10 seconds at 10,000 ft
~30 seconds at 30,000 ft
Do not perform MAX thrust dives with less than ____ pounds of fuel in either system
650
List 5 possible causes of a fuel pressure light
Corresponding boost pump failure
Fuel leak
Generator phase failure
Fuel pressure sensor malfunction
Momentary blink due to fuel requirement surge (AB initiation)
MIL power fuel flow on the ground (sea level)
2100-2700 pph
When does the engine anti-ice light illuminate?
When the switch is placed to MAN ON or in the event of right AC failure (no crossover)
When is engine-anti ice always on?
Below 65% RPM (no light illuminates)
Where does the bleed air come from for anti-ice, where does that air go, and how does anti-ice affect EGT and thrust?
When anti-ice is on, compressor 8th-stage air is directed to the inlet guide vanes and bullet nose of the engine. At engine speeds of 94-98% RPM, an increase in EGT of ~15 C is normal. A loss of thrust of 180 pounds +/- 10 pounds can be expected with anti-ice on, which equates to an ~8.5% loss in MIL and ~5.5% loss in MAX.
Normal oxygen pressure?
50-120 psi
When does the Oxygen light illuminate?
-When the oxygen quantity indicator reads 1 liter or less of LOX
-Light may blink with less than 3 liters due to sloshing
When does the fuel low light illuminate?
When either fuel quantity indicator reads below 250 pounds for 7.5 seconds
What are the fuel imbalance indications?
0-50 pounds: no display
~60-190 pounds: white difference display
~200 pounds or more: red difference display
Solo fuel imbalance limitation?
Don’t allow the right fuel quantity to be more than double the left fuel quantity when solo
Total usable fuel
3,906 pounds single-point
3,866 pounds over-the-top
Left system 1,916 pounds
Right system 1,990 pounds
When does the XMFR RECT OUT light illuminate?
When the battery is powering the DC busses (dual TRU failure)
What does a single TRU failure generate?
A PFL is generated by the MDP
How long should the battery provide DC power in the event of dual TRU failure?
Approximately 15 minutes at 80% charge
TRU voltage? Battery voltage?
TRU is 28v, battery is 24v
How many volts are required to close the battery relay? The relay stays closed until what voltage?
18v to close the relay; relay stays closed until 10v
During a battery start, which lights should be illuminate prior to applying air? In what order should the lights extinguish?
All lights except Oxygen and Fuel Low are illuminated prior to applying air. Lights extinguish in following order:
1) Flt Hydraulics (once air is connected) 2) when right gen reaches cut-in speed: rt fuel px, rt gen, XMFR Rect Out, Anti-Ice 3) Util Hydr (once left air connected) 4) left fuel px (when left throttle idle) 5) Left Gen (when left gen reaches cut-in speed)
Which lights should be illuminated prior to applying air during an external AC power start? In what order should the lights extinguish?
R/L Gen, Util/Flt Hyd, R/L Fuel Px
Lights extinguish in following order:
1) Flt Hydraulics (once air is connected) 2) rt fuel px (right throttle idle) 3) rt gen (when right gen reaches cut-in speed 4) util hydr (once left air is connected) 5) left fuel px (left throttle idle) 6) left gen (when left gen reaches cut-in speed)
